kodeWeave

kodeWeave is a free and open source, realtime coding playground for Markdown, HTML, CSS and Javascript. It shares many similarities with platforms like JSFiddle and JSBin, while being designed to work specifically offline across multiple devices, including mobile. If you every used JSFiddle, JSbin, Dabblet, Liveweave, CodePen, CSSdeck, CSSdesk, Tinkerbin, d3 playground, Plunker or Pastebin kodeWeave will feel familiar.